The 2018 Las Vegas Challenger was a professional tennis tournament played on hard courts. It was the fourth edition of the revamped tournament which was the part of the 2018 ATP Challenger Tour. It took place in Las Vegas, United States between 22 and 28 October 2018.

Singles main draw entrants

Seeds Country Player Rank1 SeedLloyd Harris1121Adrián Menéndez Maceiras1222Casper Ruud1273Jason Jung1284Noah Rubin1295Reilly Opelka1326Dominik Köpfer1757Marcelo Arévalo1818 1 Rankings are as of October 15, 2018.

Other entrants The following players received wildcards into the singles main draw: Alexander Cozbinov Evan Song Mikael Torpegaard J. J. Wolf

The following player received entry into the singles main draw as a special exempt: Borna Gojo

The following player received entry into the singles main draw as an alternate: Jan Choinski

The following players received entry from the qualifying draw: Mathias Bourgue Thai-Son Kwiatkowski Roberto Ortega Olmedo Tommy Paul

The following players received entry as lucky losers: Evan King Alexander Sarkissian Jelle Sels

Champions

Singles

Thanasi Kokkinakis def. Blaž Rola 6–4, 6–4.

Doubles

Marcelo Arévalo / Roberto Maytín def. Robert Galloway / Nathan Pasha 6–3, 6–3.

References